The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Ko-N (0 members)
- Koa e Ko’ia (1 member)
- Kr'Thak Systems (1 member)
- Kraken Privateer images (12 members)
- Kraken images (30 members)
- Kraken series (2 members)
- Kroneg (3 members)
- Kruger Intergalactic (5 members)
- Kyuk'ya System (7 members)
- Kyuky'a System (1 member)
- LH86 images (20 members)
- LMGs (5 members)
- Lago (1 member)
- Lagrangian points (1 member)
- Lamont Undersuit image (1 member)
- Lamont Undersuit images (8 members)
- Lancet MH1 images (1 member)
- Land Claim (1 member)
- Landing Zones (4 members)
- Landing zones (49 members)
- Landmarks (197 members)
- Language templates (1 member)
- Languages (5 members)
- Large (38 members)
- Large - Bidirectional (21 members)
- Large ships (38 members)
- Laser Beam (4 members)
- Laser Cannon (26 members)
- Laser Repeater (16 members)
- Laser Scattergun (3 members)
- Lava Planet (8 members)
- Law Enforcement Agencies (0 members)
- Law enforcement agencies (3 members)
- Laylani Addison images (1 member)
- Legacy Missions (10 members)
- Leggs (1 member)
- Legionnaire images (15 members)
- Legislation (3 members)
- Legs armor (30 members)
- Legs armor images (17 members)
- Leir III (1 member)
- Leir III images (7 members)
- Leir I images (1 member)
- Leir System (5 members)
- Letters from the Chairman (0 members)
- Levski (2 members)
- Levski Images (1 member)
- Levski images (32 members)
- Liberator images (20 members)
- License Templates (3 members)